Old School

Perhaps the best thing a PNG has to offer is what's called the alpha channel. An alpha channel is one byte of extra data per pixel (or palette entry for 8-bit images) that represents the transparency level of a pixel. A PNG image with alpha is capable of 256 levels of transparency.
What does all this mean? For one thing, you can antialias text and images so that sharp curves look good against any background. You can apply a true drop shadow which fades into the background. You can create images that take any shape or form. There are many possibilities with alpha transparency.

Old School

l,am sure if we wanted we could concor the world .stml,lol. cool stuff guys ......l have a dream .a dream about the world as one .no races just people like you and me .trying to help each other for no gain only friendship and knowledge .lol.more fool me ,but l beleive .Grasscity mate .